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Finding the Fourth Proportional to 957.21, 1,432.19 and 567.42

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Solution

The fourth proportional to 957.21, 1,432.19 and 567.42 is: 848.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    957.21 : 1,432.19 = 567.42 : x
  2. Step 2: Convert to fraction form
    957.21/1,432.19 = 567.42/x
  3. Step 3: Cross multiply
    957.21x = 1,432.19 × 567.42
  4. Step 4: Simplify right side
    957.21x = 812,653.25
  5. Step 5: Solve for x
    x = 812,653.25/957.21
  6. Step 6: Final answer
    x = 848.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.